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20233030220 = 22513617871621
BaseRepresentation
bin10010110101111110…
…111000101001001100
31221020002000102121122
4102311332320221030
5312414123431340
613143412020112
71314251630204
oct226576705114
957202012548
1020233030220
118643022087
123b08001638
131ba5a58240
14d9d225404
157d644bdb5
hex4b5fb8a4c

20233030220 has 96 divisors (see below), whose sum is σ = 46595726016. Its totient is φ = 7334323200.

The previous prime is 20233030219. The next prime is 20233030229. The reversal of 20233030220 is 2203033202.

It is not an unprimeable number, because it can be changed into a prime (20233030229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12481010 + ... + 12482630.

It is an arithmetic number, because the mean of its divisors is an integer number (485372146).

Almost surely, 220233030220 is an apocalyptic number.

20233030220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20233030220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23297863008).

20233030220 is an abundant number, since it is smaller than the sum of its proper divisors (26362695796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20233030220 is a wasteful number, since it uses less digits than its factorization.

20233030220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491 (or 2489 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

Adding to 20233030220 its reverse (2203033202), we get a palindrome (22436063422).

The spelling of 20233030220 in words is "twenty billion, two hundred thirty-three million, thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 61 65 122 130 244 260 305 610 787 793 1220 1574 1586 1621 3148 3172 3242 3935 3965 6484 7870 7930 8105 10231 15740 15860 16210 20462 21073 32420 40924 42146 48007 51155 84292 96014 98881 102310 105365 192028 197762 204620 210730 240035 395524 421460 480070 494405 624091 960140 988810 1248182 1275727 1285453 1977620 2496364 2551454 2570906 3120455 5102908 5141812 6240910 6378635 6427265 12481820 12757270 12854530 16584451 25514540 25709060 33168902 66337804 77819347 82922255 155638694 165844510 311277388 331689020 389096735 778193470 1011651511 1556386940 2023303022 4046606044 5058257555 10116515110 20233030220